将select实现的TCP并发服务器和pol实现的TCP客户端各自实现一遍
#include<myhead.h>#define MYIP "192.168.125.154"
#define MYPORT 9999
#define YOUIP "192.168.125.154"
#define YOUPORT 1888
int main(int argc, const char *argv[])
{
int cfd=socket(AF_INET,SOCK_STREAM,0);
if(cfd==-1)
{
perror("socket error");
return -1;
}
printf("socket success %d\n",cfd);
int reuse=1;
int reuse = 1;
if(setsockopt(cfd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse))==-1)
{
perror("setsockopt error");
return -1;
}
printf("端口号快速重用乐成\n");
struct sockaddr_in cin;
cin.sin_family=AF_INET;
cin.sin_port=htons(YOUPORT);
cin.sin_addr.s_addr=inet_addr(YOUIP);
if(bind(cfd,(struct sockaddr*)&cin,sizeof(cin))==-1)
{
perror("bind error");
return -1;
}
printf("bind success\n");
struct sockaddr_in sin;
sin.sin_family=AF_INET;
sin.sin_port=htons(MYPORT);
sin.sin_addr.s_addr=inet_addr(MYIP);
if(connect(cfd,(struct sockaddr*)&sin,sizeof(sin))==-1)
{
perro("connect error");
return -1;
}
printf("connect success\n");
//
struct poldfd pfds;
pfds.fd==0;
pfds.events=POLLIN;
pfds.fd=cfd;
pfds.events=POLLIN;
char wbuf="";
while(1)
{
int res=poll(pfds,2,-1);
if(res==0)
{
printf("time out\n");
return -1;
}
else if(res==-1)
{
perror("poll error");
return -1;
}
if(pfds.revents==NULL)
{
fgets(wbuf,sizeof(wbuf),stdin);
wbuf-1]=0;
if(strcmp(wbuf,"quit")==0)
{
break;
}
send(cfd,wbuf,sizeof(wbuf),0);
}
if(pfds.revents==POLLIN)
{
bzero(wnuf,sizeof(wnuf));
recv(cfd,wbuf,sizeof(wbuf),0);
printf("收到服务器的消息为：%s\n",wbuf);
}
}
close(cfd);
return 0;
}
#include<myhead.h>
#define MYIP "192.168.243.131"
#define MYPORT 9999
int main(int argc, const char *argv[])
{
//1、套接字的创建，也就是载体
int sfd=socket(AF_INET,SOCK_STREAM,0);
if(sfd==-1)
{
perror("socket error");
return 1;
}
printf("socket success\n");
//2、绑定
struct sockaddr_in sin;
sin.sin_family=AF_INET;
sin.sin_port=htons(MYPORT);
sin.sin_addr.s_addr=inet_addr(MYIP);
if(bind(sfd,(struct sockaddr*)&sin,sizeof(sin))==-1)
{
perror("bind error");
return -1;
}
printf("bind success\n");
//3、listen模式
if(listen(sfd,128)==-1)
{
perror("listen erro");
return -1;
}
printf("listen success\n");
//4、接受终端的申请
struct sockaddr_in cin;
socklen_t socklen = sizeof(cin);
int newfd =-1;
/**********************/
//
fd_set readfds,tempfds;
FD_ZERO(&readfds);
FD_SET(0,&readfds);
FD_SET(sfd,&readfds);
//
int maxfd=sfd;
struct sockaddr_in cin_arr;
while(1)
{
//
tempfds =readfds;
int res =select(sfd+1,&tempfds,NULL,NULL);
if(res==0)
{
printf("time out\n");
return -1;
}
else if(res ==-1)
{
perror("slect error");
return -1;
}
//
for(int i=0;i<maxfd;i++)
{
if(!FD_ISSET(i,&tempfds))
{
continue;
}
//
if(i===sfd)
{
newfd=accept(sfd,(struct sockaddr*)&cin,&socklen);
if(newfd==-1)
{
perror("accept error");
return -1;
}
printf("[%s:%d]:已连接,%d",\
inet_ntoa(cin.sin_addr),ntohs(cin.sin_port),newfd);
FD_SET(newfd,&readfds);
cin_arr=cin;
if(maxfd<newfd)
{
maxfd=newfd;
}
}
}
//
else if(i==0)
{
char buf="";
fgets(buf7,sizeof(buf),stdin);
buf=0;
printf("触发了键盘输入事件\n");
//
for(int i=4;i<maxfd;i++)
{
send(i,buf,strlen(buf),0);
}
}
else
{
//5、读写
char rbuf="";
while(1)
{
bzero(rbuf,sizeof(rbuf));
// int ret=recv(newfd,rbuf,sizeof(rbuf),0);
int ret=recv(i,rbuf,sizeof(rbuf),0);
if(ret==0)
{
printf("客户端以下线\n");
close(i);
FD_CLR(i,&readfds);
for(int j=maxfd;j>sfd;i++)
{
if(FD_ISSET(i,&readfds))
{
maxfd=j;
break;
}
}
continue;
}
printf("[%s:%d]:%s\n",\
inet_ntoa(cin.sin_addr),ntohs(cin.sin_port),rbuf);
/* strcat(rbuf,"*_*");
send(newfd,rbuf,sizeof(rbuf),0);
printf("发送乐成\n");
*/
for(int i=4;i<maxfd;i++)
{
send(i,rbuf,strlen(rbuf),0);
}
}
}
}
//6、关闭
close(sfd);
return 0;
}
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